1-phenyl-5-pyrazolone-3-carboxylic acid CAS 119-18-6
| CAS No. | 119-18-6 |
| Molecular Formula | C10H14N2O3 |
| Molecular Weight | 210.23 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Owing to an amino-acid-derived structure, an amide group, a hydroxyl group, an ether linkage, 1-phenyl-5-pyrazolone-3-carboxylic acid is typically off-white to pale yellow crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 210.23 g/mol — guide the selection of appropriate sample preparation and analytical techniques. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.
1-phenyl-5-pyrazolone-3-carboxylic acid (CAS 119-18-6) is a high-purity analytical reference standard with the molecular formula C10H14N2O3 and a molecular weight of 210.23 g/mol.
This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.
As a certified reference material (CRM), 1-phenyl-5-pyrazolone-3-carboxylic acid meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.
Physical & Chemical Properties
| Molecular Formula | C10H14N2O3 |
| Molecular Weight | 210.23 g/mol |
| Appearance | Off-white to pale yellow crystalline powder. (faint amine-like odor) |
| Purity | 97%+ |
| Storage | Store at 2-8°C, protect from light, keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | May oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | 5.0 |
| UV Absorption | UV-absorbing |
| Structural Features | Aromatic ring present |
| CAS Registry Year (est.) | 1957 |
| Nitrogen Atoms | 2 |
Recommended Standards
- N-Boc-2-amino-5-hydroxypyridine (CAS 1187930-13-7)
- 1,10-Phenanthroline-4,7-diamine (CAS 119004-19-2)
- 1187163-92-3 4-(2-(chloromethyl)pyrimidin-4-yl)morpholine hydrochloride RL00721 (CAS 1187163-92-3)
- 2-Methoxy-3-(2-methoxyphenyl)propanoic acid (CAS 1192772-98-7)
- 1171464-92-8 4-[(4-Isopropyl-2,3-dioxopiperazin-1-yl)methyl]benzoic acid MFCD14281739 (CAS 1171464-92-8)
- 2-(3-((Benzyl(cyclopropyl)amino)methyl)piperidin-1-yl)acetic acid (CAS 1353985-41-7)
- 2-(2-Acetamido-4-(4-isopropylphenyl)thiazol-5-yl)acetic acid (CAS 1181323-18-1)
- tert-butyl 1-methyl-4-oxo-cyclohexanecarboxylate (CAS 1308838-28-9)
- 4,4'-(32,35,52,55,72,75,92,95-Octamethoxy-1,3,5,7,9(1,4)-pentabenzenacyclodecaphane-12,15-diyl)dibenzaldehyde (CAS 2414973-65-0)
- 2-(Dimethylamino)-6-hydroxybenzaldehyde (CAS 52463-05-5)
- 1-Benzyl-N-(4-methoxybenzyl)piperidin-4-amine 2956AE 415970-67-1 C20H26N2O (CAS 415970-67-1)
- 5-chloro-1-[(3,4-dichlorophenyl)methyl]-1H-Indole-2,3-dione-3-[O-(4-chloro-1-oxobutyl)oxime] (CAS 320420-78-8)
- 1-(bromomethyl)-2-methyl-cyclopropane (CAS 31950-58-0)
- Liraglutide Impurity 16 TFA Salt (CAS CATO-C4X-199216)
Why CATO?
- ISO 17034 accredited reference material producer (CNAS + ANAB dual accreditation)
- 130,000+ catalog items in stock, COA supplied with every batch
- Worldwide shipping with full export documentation (HS code guidance available)
- Technical support: +86 18665070610 / Nicole.chen@cato-chem.com